JP3346841B2 - Stock control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stocking control device provided with a mechanism for detecting a stock end of straw being conveyed.

[0002]

2. Description of the Related Art As a stock arrangement control device using a stock end detection mechanism, a stock arrangement control device of a straw processing unit in a combine is known. This stock alignment control device, when tapping and aligning the ends of the straw in order to perform the bundling of the straw in a good condition with the stock end aligned, the stock end position in the binding unit fluctuates due to the change in the culm length of the cutting straw. However, it is intended to ensure that the tapping action can be provided without excess and deficiency, and one example thereof is disclosed in Japanese Utility Model Laid-Open No. 2-123834.

[0003] In this disclosed stock arrangement control device, a pair of contact sensors suspended along the direction of the culm of the straw is used as a stock end detection mechanism, and the contact of both contact sensors with the straw is used. The position of the plant edge is determined from the distribution. In other words, if both contact sensors are in contact with the straw, the stock end is closer to the stock than the stock sensor, and if only the tip contact sensor is in contact with the straw, The end is in the middle of both contact sensors, and if both contact sensors do not contact the straw, the end of the strain is detected to be on the tip side than the contact sensor on the tip side, and the end of the strain is detected. Based on the detection information of the contact sensor, when the state of being in the middle of both contact sensors is detected, the proper stock source aligning action is exerted so that the ends of the stock can be bound well. The alignment mechanism is controlled to slide in the direction of the stem.

[0004]

The strain end detecting mechanism used in the prior art has a structure for judging the position of the strain end from the contact distribution state of a pair of contact sensors arranged in parallel in the direction of the stem of the straw. Therefore, it is desirable that each contact sensor be capable of sensing contact with the straw with the same characteristics. Therefore, when the contact sensor is retracted to the set position due to the contact with the straw, it is sensed when the contact pressure with the straw acting on the contact sensor is higher than the set value. Has to be performed, and it takes time to adjust and set the contact sensor.

Further, in the above-mentioned prior art in which the stock end detecting mechanism is used in the stock arrangement control device, the stock end detecting mechanism provided with a pair of contact sensors is disposed at the swing fulcrum of the hitting member.
It is configured to detect the straw end at a position substantially short of reaching the tying device. Generally, the straw discharged obliquely rearward from the straw conveying device moves straight rearward above the cutter and is sent to the binding device. It is located near the end of.

In other words, since the front and rear distance between the position of the contact sensor and the actual binding position is relatively large and the end of the straw is detected where the transfer state of the straw is not stable, the stock end detection mechanism is used. There has been a tendency that the deviation between the detection information and the position of the end of the stock at the time of binding is so large that it is difficult to perform accurate stock alignment control, or that a means for correcting the detection information is required. In addition, if the distance between the detection position and the binding position is large, between the time of detection and the binding time, the waste straw moves in the direction of the culm due to the inclination of the body or running vibration, etc. It may be difficult to do so.

[0007] The present invention was made in view of such point, it is an object of the present invention, when performing Kabusoroe control of straw discharge by utilizing strains end detection mechanism, the position of the contact sensor By bringing it closer to the striking member, accurate stock alignment control can be performed , and the striking action of the striking member is ensured.
The point is to be able to do it.

[0008]

[Means for Solving the Problems]

(Structure) The characteristic structure of the present invention is that the stock end detection mechanism is connected to the stock end of the carrier.
A contact piece that detects by touching and a switch that detects the contact position
And the contact piece is vertically
And a horizontal portion connected to the pivot portion,
Formed with a vertical detector connected to the tip of the horizontal part
To constitute swingably in the vertical axis around the contact
With the piece and the hitting member adjacent to each other,
And the contact piece's vertical detection unit.
Place in a state close to the one end of the hitting member, before
The detection movement direction of the contact piece vertical direction detection unit and the tapping
Set the direction of the tapping movement of the member to the culm direction of the transport straw.
The operation and effect are as follows.

(Operation) That is, conventionally, two contact pieces are arranged in the left-right direction,
The state that the end position of the sent straw fluctuates in the culm direction
In the present application, the contact piece was
By moving it in the direction
It is not necessary to arrange two pieces as a contact piece;
No. In addition, the contact piece is moved in the
The configuration that detects the end of straw is adopted,
The position is brought closer to the hitting member. Specifically
In the case of the conventional configuration in which two contact pieces are
Two contact pieces are based on a downward attitude centered on the horizontal axis
Contact and swing after contact to the top and to the rear of the aircraft.
The contact piece
It was necessary to provide an interval between the installation position of the device and the hitting member. This
On the other hand, in the case of the present invention, the end of the straw piece of the contact piece is
The direction of movement detected by the contact action of
The contact piece of the stock end detection means in the direction of the tapping movement of the tapping member.
It is set to follow. With this configuration,
The position of the contact piece of the detection means should be provided close to the striking member.
Can be.

[0010] The detection portion of the contact piece is moved vertically.
The transfer target that is detected by setting
The position of the end of the straw has some variation in the vertical direction.
However, detection errors rarely occur. Moreover, the contact piece
Is provided with a horizontal part and a vertical part at the tip.
Therefore, the installation position of the pivot supported on the base end of the horizontal part
Can be selected at any position regardless of the
Can be specified. Therefore, the detection work by the stock end detection means
The distance from the completion of the movement to the binding position can be shortened.
Can be detected where the straw moves straight back
Where the transfer condition of straw is more stable than before,
Can be detected, and the control accuracy is increased, and the stock
Be improved. Also, due to external factors such as running vibration
That makes us it even less of the waste straw's Les movement, also from the point
This will contribute to ensuring the operation of stock alignment.

(Effect) Therefore, according to the first aspect of the present invention, a stock end detection mechanism
The contact piece is moved substantially along the moving direction of the striking member.
The position of the end of the plant where there is a possibility of displacement of the straw
Alignment control operation by shortening the distance from detection to unity
And the position of the end of the straw that is being conveyed is increased.
Variations occur in the vertical direction, and multiple straws
Can be detected by the contact piece
This allows the tapping member to accurately act on the transport straw
And the stocks were well aligned even if the culm length fluctuated.
It was possible to provide a stock control device capable of producing a straw bundle.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a straw processing unit A provided at the rear of the combine, wherein 1 is a straw transporting device that diagonally and backwardly feeds straw from a threshing device (not shown) in a reclined position, and 2 is a thin straw discharging device. Cutter 3, cutting unit for binding straw, 4
Is a three-dimensional straw discharging device (see FIG. 6) which drops and discharges the bundle of straw in a vertical position so that the stock is downward to dry the bundle of straw. The straw discharging device 1 has a structure in which the straw is pinched and transported by the chain with projection 1a and the holding rail 1b, and the end position of the lower holding rail 1b is changed so that the straw discharged from the straw conveying device 1 is discharged. The position in the left-right direction, that is, the binding position in the binding device 3 can be adjusted and set in the culm direction.

The binding device 3 includes a binding portion 3A for binding the straw supplied from the straw transporting device 1 in a sideways posture, and a base end of the waste collected in the focusing space S of the binding portion 3A. Aligning mechanism 3 for aligning the end of the stock side by hitting with a hitting member 12
B. The binding unit 3A is provided with a straw collecting space S
Is formed in an upper packer structure in which a knot building and a string holder 8 are arranged below, and a raking packer 9 and a needle 10 for collecting straw are arranged above. Numeral 11 denotes a discharge arm for sending out the bundle of straw that has been bound.

The stocking mechanism 3B includes a striking member 12 for striking the base end of the straw collected in the focusing space S to align the end of the straw, and the striking member 12 is connected to the straw in the focusing space S. And a reciprocating drive mechanism 13 that reciprocates in the direction of the culm. The hitting member 12 is composed of a support pipe 14 swingable about the vertical axis X above the cutter 2 and a hitting plate 15 attached to the support pipe 14. The reciprocating drive mechanism 13 basically receives a power from a rotating shaft and cranks an arm 17 pivotally connected to the support pipe 14 to basically move the arm 17 in a known manner (actually disclosed in Japanese Unexamined Utility Model Publication No.
In this embodiment, power is taken from the packer shaft 18 as shown in FIG.

A moving mechanism 6 is provided which can adjust the position of the stock arrangement mechanism 3B in the direction of the straw culm. That is, the reciprocating drive mechanism 13 and the base 16 supporting the vertical axis X are slidably supported on the rail member 19 and the packer shaft 18 in the left and right direction, and are driven and rotated by the electric motor M. The top member 22 screwed into the base 21 is
6 to form a moving mechanism 6. Therefore, by rotating the electric motor M in the forward and reverse directions, the stock arrangement mechanism 3B can be moved right and left, and the entire operation range of the hitting member 12 can be adjusted right and left.

This combine is provided with a stocking control device C capable of satisfactorily stocking even if the straw has a culm length variation. In other words, the stock arrangement control device C makes contact with the stock end of the transport straw and detects the position of the stock end before the stock arrangement mechanism 3B. Is operated. That is,
The stock end detection mechanism 23, the electric motor M of the moving mechanism 6, and the on / off switch 28 are connected to the control device 29 to constitute a stock alignment control device C. The detailed configuration will be described below.

As shown in FIGS. 1, 2, and 4, the stock end detecting mechanism 23 includes a sensor case 23A attached to the stock aligning mechanism 3B at a position on the rear side of the swing axis X of the hitting member 12.
A contact piece 23 swingable about a vertical axis P within a predetermined range.
B is pivotally constructed. In the sensor case 23A,
A pair of limit switches 24, 2 straddling the contact piece 23B.
A push plate 25 operable to the switches 24 and 27 is attached to the contact piece 23B, and the contact piece 23B is urged rightward by a tension spring 26. Therefore, when there is no straw, the push plate 25 is in the non-detection posture in which the first limit switch 24 on the front side is pressed.

The contact piece 23B is formed in a stepped shape having a pivot portion 23a having a vertical axis P, a horizontal portion 23b, and a vertical detecting portion 23c located near the front end of the striking plate 15. When the piece 23B is in the non-detection posture, the angle is set so that the horizontal portion 23b is inclined with respect to the left-right direction in plan view. That is, when the contact piece 23B comes into contact with the straw that is transported straight backward, the inclination of the contact piece 23B causes the contact piece 23B to move substantially to the left (that is, the detection direction along the direction in which the striking member 12 strikes). The contact piece 23B swings and the inclined arrangement structure causes the contact piece 2B to contact with the straw.
The moving force in the straw supply direction applied to 3B is
Conversion means D is provided for changing B into a component force for moving B in the detection direction.

The operation of the stock arrangement control device C will be described. The contact piece 23B swings to the left by the contact of the end of the straw stock with the contact piece 23B.
7 are not operating (the state indicated by the solid line in FIG. 4) is a proper detection state (proper reference position). At this time, a proper tapping action is given to the straw in the converging space S by the tapping member 12. , Can be stocked well. Control operation does not occur in an angle range in which neither of the switches 24 and 27 is operated, which corresponds to a so-called dead zone.

When the culm length becomes longer and the contact piece 23B swings further to the left and hits excessively, the second limit switch 27 is actuated, and the electric motor M is driven to rotate forward to move the stock arrangement mechanism 3B to the left. And stops when the appropriate detection state is reached. Conversely, when the culm length is shortened, the contact piece 23B swings to the right, and the tapping becomes insufficient, the first limit switch 24 is operated, the electric motor M is driven in reverse, and the stock arrangement mechanism 3B is slid to the right. It stops when it reaches the proper detection state. However, when the ON / OFF switch 28 that controls the operation of the control is “OFF”, the electric motor M is naturally not driven.

In this stock arrangement control device C, the contact piece 23B
Is located immediately before the front end swing locus of the swinging striking plate 15, and the stock end position can be detected in a state where the straw is approaching the binding space S as much as possible. It has been made available.

As shown in FIG. 6, the three-dimensional discharging device 4 has a structure in which a bundle of straw is nipped and conveyed by a chain mechanism 4a with projections and a guide rail 4b. Chain mechanism with projection 4a
Case 31 having a transmission system to the front wheel 30 of the vehicle, and a guide frame 3 made of a pipe for supporting the guide rail 4b.
2, the three-dimensional emission device 4 is supported on the body side at the vertical axis Z. The chain mechanism with projection 4a and the guide frame 32 are connected by a connecting member 33.

As shown in FIG. 7, the three-dimensional discharge device 4 is swung about the vertical axis Z, and the left-right storage position along the rear of the body and the working position projecting obliquely rearward at about 45 degrees. And a retracting mechanism E for retaining the lock. That is,
An arm 34 having a tip pin 35 is attached to the swing shaft 4c, and an engagement piece 37 pivotally supported on the machine body side while being urged forward by a spring 36 is arranged so as to act on the tip pin 35. The recess 3 into which the tip pin 35 is engaged.
8 are formed at positions of the engagement pieces 37 corresponding to the respective postures of storage and work.

Therefore, even if the solid discharge device 4 collides with another object, the tip pin 35 comes off the recess 38 relatively easily, thereby preventing damage. Further, a detection switch 39 is provided which is activated when the tip pin 35 is disengaged from the recess 38 and the engagement piece 37 is moved backward, and an alarm device 40 such as a buzzer is activated when the three-dimensional emission device 4 is shifted to a position other than the normal position. A controller 41 is provided to perform the operation.

As shown in FIG. 8, a strain end detecting mechanism 23
In addition to the structure shown in Fig. 1,
Some have a moving contact piece 23B. Contact piece 23
Attach the angled contact plate 23C to the tip of B
As a result, the contact piece 23B moves left and right due to contact with the straw that moves back and forth.
And in this case, slide left and right
The conversion means D is constituted by the structure and the angled contact plate 23C.
Have .

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view showing a straw processing unit at the rear of a combine.

FIG. 2 is a plan view of a straw processing unit.

FIG. 3 is a rear view of the binding device.

FIG. 4 is a system diagram showing a stock end detection unit and a stock alignment control device.

FIG. 5 is a cross-sectional view showing the main structure of the reciprocating drive mechanism.

FIG. 6 is a side view showing a support structure of the three-dimensional emission device.

FIG. 7 is a partial plan view showing a posture maintaining mechanism of the three-dimensional emission device.

FIG. 8 is a principle diagram showing another structure of the stock end detection mechanism.

[Explanation of symbols]

1 transport device 3 binding device 3A bundling unit 3B Kabusoroe mechanism 6 moving mechanism 12 hitting member 23 share edge detection mechanism 23B contact pieces 23a pivotally supporting 23b horizontal portion 23c detecting unit 24, 27 switch 29 position control means D converter P vertical axis Heart S Focused space

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01F 12/00 310

Claims (1)

(57) [Claims] 1. A tying method for binding straw after threshing in a sideways posture.
A bundle (3A) and a focusing space (S) of the bundle (3A)
The end of the straw collected at the base of the straw with a tapping member (12)
And a stock arrangement mechanism (3B) for aligning the stock end position.
The straw bundling device (3) and the straw bundling device (3)
Detects the position of the end of the straw by contacting it
A stock edge detection mechanism (23) is provided in the stock alignment mechanism (3B).
And based on the detection result of the stock end detection mechanism (23).
The position of the stock alignment mechanism (3B) can be adjusted in the direction of the straw culm
Stock control device equipped with an efficient moving mechanism (6).
And makes the stock end detection mechanism (23) detect by contacting the stock end.
Contact piece (23B) and a switch for detecting the contact position.
(24) and (27), and the contact piece (23B) is pivoted with a vertical axis (P).
Part (23a) and water connected to its pivot (23a)
Connected to the flat part (23b) and the tip of the horizontal part (23b)
And the upper and lower detectors (23c).
It is configured to be swingable around the lower axis (P), and the contact piece (23B) and the hitting member (12) are adjacent to each other.
In the direction that the straw is conveyed
A vertical direction detecting portion (23c) for detecting the contact piece (23B);
The hitting member (12) is arranged close to one side end.
Then, the detection of the vertical direction detecting portion (23c) of the contact piece (23B) is performed.
Outgoing movement direction and the hitting movement direction of the hitting member (12).
Is set in the direction of the culm of the transport straw.
Place.